It could be bridgy. I think my mistake last year was to confuse initial symptoms with cartilage problems that stopped me running 25 years ago. It is really due to muscle imbalance which is why it is common among cyclists and runners. If you don't address the symptoms early the band gets so taut it hinders leg/knee movement and then the symptoms/pain are akin to sciatic pain. So, at its worse my knee kicks out as i walk up and down stairs, my knee locks, and there is an intense pain that moves of its own accord, up and down the leg, through the knee and into the foot. It is bonkers. Cycling actually helps, as i said when the symptoms really hit some 6-8 months ago, i think because, balanced with cold presses/ice and pain killers and physio, it loosens up the knee etc. But i don't think balls out cyclechat bkool racing is the right way forward just yet! There is lots of advice online that might help nip it in the bud for you if your pain is ITB related and a useful thread here with exercises too.
http://www.bikeradar.com/forums/viewtopic.php?f=40011&t=13069438